InChI=1S/C21H27NO7S/c1-16(29-30(25,26)27)13-22-14-18(23)15-28-21-10-6-5-9-19(21)20(24)12-11-17-7-3-2-4-8-17/h2-10,16,18,22-23H,11-15H2,1H3,(H,25,26,27)